Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Lee, Soo-Keun | - |
dc.contributor.author | Mills, Andrew | - |
dc.contributor.author | O'Rourkeb, Christopher | - |
dc.date.available | 2017-09-11T03:33:20Z | - |
dc.date.created | 2017-09-11 | - |
dc.date.issued | 2017-08 | - |
dc.identifier.issn | 0306-0012 | - |
dc.identifier.uri | http://hdl.handle.net/20.500.11750/4407 | - |
dc.description.abstract | Action spectra are an increasingly important part of semiconductor photocatalyst research, and comprise a plot of photonic efficiency, η, versus excitation wavelength, λ. The features and theory behind an ideal photocatalytic system are discussed, and used to identify: (i) the key aspect of an ideal action spectrum, namely: it is a plot of η vs. λ which has the same shape as that of the fraction of radiation absorbed by the semiconductor photocatalyst, f, versus λ and (ii) the key requirement when running an action spectrum, namely, that the initial rate of the photocatalytic process is directly proportional to incident photon flux, ρ, at wavelengths where η > 0. The Pt/TiO2/MeOH system is highlighted as an example of a photosystem that yields an ideal action spectrum. Most photocatalytic systems exhibit non-ideal action spectra, mostly due to one or more of the following: light intensity effects, crystal phase effects, dye-sensitisation, dye photolysis, charge transfer complex, CTC, formation and localized surface plasmon radiation, LSPR, absorption by a deposited noble metal catalyst. Each of these effects is illustrated using examples taken from the literatures and discussed. A suggested typical protocol for recording the action spectrum and absorption/diffuse reflectance spectrum of a photocatalytic system is described. The dangers of using a dye to probe the activity of a photocatalysts are also discussed, and a possible way to avoid this, via reductive photocatalysis, is suggested. © 2017 The Royal Society of Chemistry. | - |
dc.language | English | - |
dc.publisher | Royal Society of Chemistry | - |
dc.title | Action spectra in semiconductor photocatalysis | - |
dc.type | Article | - |
dc.identifier.doi | 10.1039/c7cs00136c | - |
dc.identifier.scopusid | 2-s2.0-85027398490 | - |
dc.identifier.bibliographicCitation | Chemical Society Reviews, v.46, no.16, pp.4877 - 4894 | - |
dc.description.isOpenAccess | FALSE | - |
dc.subject.keywordPlus | RHODAMINE-B | - |
dc.subject.keywordPlus | HETEROGENEOUS PHOTOCATALYSIS | - |
dc.subject.keywordPlus | LIGHT-INTENSITY | - |
dc.subject.keywordPlus | METHYLENE-BLUE | - |
dc.subject.keywordPlus | TIO2 | - |
dc.subject.keywordPlus | DEGRADATION | - |
dc.subject.keywordPlus | WATER | - |
dc.subject.keywordPlus | DEPENDENCE | - |
dc.subject.keywordPlus | SURFACE | - |
dc.subject.keywordPlus | FILMS | - |
dc.citation.endPage | 4894 | - |
dc.citation.number | 16 | - |
dc.citation.startPage | 4877 | - |
dc.citation.title | Chemical Society Reviews | - |
dc.citation.volume | 46 | - |
There are no files associated with this item.